Datasheet

AD8646/AD8647/AD8648
Rev. D | Page 13 of 20
4.0
0
–40 120
TEMPERATURE (°C)
SUPPLY CURRENT PER AMPLIFIER (mA)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
–200 20406080100
V
OUT
= V
SY
/2
V
SY
= 2.7V
V
SY
= 5V
06527-040
Figure 40. Supply Current per Amplifier vs. Temperature
06527-045
TIME (200ns/DIV)
VOLTAGE (1V/DIV)
SHUTDOWN PIN
AMPLIFIER OUTPUT
V
SY
= 2.7V
R
L
= 1kΩ
A
V
= 1
T
A
= 25°C
Figure 41. Turn-On Time
06527-046
TIME (200ns/DIV)
VOLTAGE (1V/DIV)
SHUTDOWN PIN
AMPLIFIER OUTPUT
V
SY
= 2.7V
R
L
= 1kΩ
A
V
= 1
T
A
= 25°C
Figure 42. Turn-Off Time
0
–20
–40
–60
–80
–100
–120
1k 10k 100k
CHANNEL SEPARATION (dB)
FREQUENCY (Hz)
06527-042
V
IN
= 2V p-p
V
IN
= 0.5V p-p
V
SY
= 5V
R
L
= 2kΩ
A
V
= –100
T
A
= 25°C
V–
V+
V–
V+
U2
R2
200Ω
R1
20Ω
6
7
5
V+
V–
V+
V–
0
0
0
0
+
–
V
IN
R3
2kΩ
U1
2
3
CS (dB) = 20 log (V
OUT
/100 = V
IN
)
Figure 43. Channel Separation
06527-043
TIME (200ns/DIV)
VOLTAGE (1V/DIV)
SHUTDOWN PIN
AMPLIFIER OUTPUT
V
SY
= 5V
R
L
= 1kΩ
A
V
= 1
T
A
= 25°C
Figure 44. Turn-On Time
06527-044
TIME (200ns/DIV)
VOLTAGE (1V/DIV)
SHUTDOWN PIN
AMPLIFIER OUTPUT
V
SY
= 5V
R
L
= 1kΩ
A
V
= 1
T
A
= 25°C
Figure 45. Turn-Off Time